Some additional information:
Q: Do you allow spam, botnet, phishing or any else fraud things on your servers?
A: No! We prefer to work without any illegally things and provide "white" services to our clients and we react on abuses.
Q: Can we use VPN?
A: Yes, but only in personal porpuses. Public VPN's are not allowed.
Q: How can i install OS from my ISO?
A: We use VMmanager web-panel where user able to upload ISO with install files and setup the server by VNC service.

Comments

2) Your traffic limit doesn't make a lot of sense. On a 100Mbps link, one would be likely unable to exhaust the 30TB limit at all. A fully, 24/7, saturated 100Mbps link, including TCP/IP overhead, would be able to push roughly 31104GB of data in 30 days. Technical wise and even billing wise, the term "unmetered" would likely fit as well.

@florianb said:
2) Your traffic limit doesn't make a lot of sense. On a 100Mbps link, one would be likely unable to exhaust the 30TB limit at all. A fully, 24/7, saturated 100Mbps link, including TCP/IP overhead, would be able to push roughly 31104GB of data in 30 days. Technical wise and even billing wise, the term "unmetered" would likely fit as well.

Yes, you are right! The "unmetered" would as best as possible in this offer. This is some "tradition" in CIS forum to detail traffic in GB for all and we missed about it here :)